Hi Rose, You won't see them on display at any company as I designed them and instructed the window manufacturer how to make them. They were made by Stegbar windows based on their standard Georgian windows, which are normally powder coated white. I instructed to make them in powder-coated black but to exclude the vertical divisions. I think that most aluminium window manufacturers should be able to make them - but none of them will have them on display. I don't think that they would look very effective if you were using double glazing. This project was completed over 20 years ago (yes I have been in the business that long!) so I hope that the window manufacturers are still making Georgian style sliding doors! Best of luck, Dr Retro of Dr Retro House Calls

You should also consider thermal efficiency and your views. Even double-glazed windows transmit heat. Your house doesn't seem to have many eaves. If you have the taller windows on your side facing walls will it mean you just get a better view of the neighbours roof and your side fence? Will they get a better view into your side facing windows? Don't just consider how it looks from the inside, but think about the whole house from the outside as well - including views, privacy, and extra heat gain in summer, and heat loss in winter, plus all of those extra window furnishings. If you are getting custom made window furnishings then there will be extra cost in materials and labour. If you are buying standard off the-shelf window coverings then there is much less range available at 2700mm heights for full length windows. Best of luck, Dr Retro of Dr Retro House Calls

Beautiful but all I can think about are heating and cooling costs, so much glass means temperature transfer

In your example I’d paint the trims the darker colour but have the whole room the darker colour not just a feature wall.